Rotary pump



Nov: 1s, l1924. A 1,515,961

R. J. MEYER ROTARY PUMP Filed oct. 4. 19?: 2 Sheena-sheep 2 Patented Nov. 1.8, 1924.

RALPH J. MEYER, E DENVER, comenano.

ROTARY IUM?.

Application ledctober 4, 1923. Serial No. 666,571.

To all whom it may concern:

Be it known that I, RALPHJ. MEYER, a

,citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented a new and useful Rotary Pump, of which the following is a specification. l

This invention relates to pumps and more particularly fluid pumps of the rotary type,

the primary object of the invention being to provide means to insure the positive operation of the pistons and eliminate leakage between the pistons and walls of the chamber in which the rotor operates.v

Another object of the invention is to provide means for cushioning the movements of the pistons as they move within their pockets, vthereby reducing friction lpetween the pistons and walls of their pockets to the minimum With the foregoing and other objects lin View vwhich will appear as the description proceeds, the invention resides'in the combination and arrangement of parts and in the details of vconstruction hereinafter dcscribed and claimed, it being understood that changes in the precise embodiment Vof the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings v Figure 1 is -an end elevational view of a pump constructed in accordance with the present invention, one of' the heads being 85 removed.

, Figure 2 is a sectional view taken on line 2-2 of Figure 1. Figure 3 is a transverse sectional view.

Figure 4 is a perspective view of one of the spring securing members, and

Figure 5 isa securing member employed for anchoring the spring to its support. i

Referrin to the drawings in detail, the reference c aracter 5 designates the base of the pump, and the reference character 6 designates the circular chamber disposed above the base, and forming a part thereof.

- An inlet pipe isindicated at 7 and communicates with the chamber through the port 8, there being provided a vertical wall 9 to restrict passage of Huid directly through the base.

The outlet pipeis vindicated at 10 )md also communicates with the circular chamber to permit fluid to pass from the chamber after tons to 'throw them outwardly into contact the uid has been drawn into the chamber through the inlet openin 7.

Eccentrically mounte in the circular chamber is a supporting shaft .11 that has its ends journaled in the removable heads .12 that are bolted to the ends o? 'thecircular chamber, by means of the bolt 13, suitable 'packing indicated at 1d being provided to insure against leakage betweenthe heads and shaft. l 'l These heads 12 are formed with recessed portions 15 that accommodate the ends of the shafts 16 and the spring securing mem- 4bers 17 that are mounted thereon, whichshafts are formed integraly with the pistons if@ indicated generally by the reference character 18. The pistons 18 are also mounted to operate in the pockets 19 of the rotor 20, which rotor includes annular anges 21 through which the. ends of the shafts 16 pass. Each of the pistons comprises an arcuate plate 22 and a head 23, ianges 24 and 25 respectively, being provided to engage one wall of the pockets to insure a true op: eration of the pistons within the rotor. Cut out portions 26 are formed in the outer surface of the rotor. and provide shoulders for the reception of the anges 25 to re-, strict inward movement .of the pistons. Formed in each arcuate plate of the respective pistons isan opening 27 that provides communication between thecircular cham. ber and pockets in which. the pistons move, allowing a quanti-ty of fluid to enter the pockets and cushion the movements of the pistons within theirv pockets. Each spring securing member is formed with a hook portion 28 that enga-ges the lug 29 formed on the spring 30 associated therewith, the springs being curved around @5 the supporting shaft 11, one end of each spring being anchored to the head 'ft2 supporting the same, at 30 so that the springs will normally exert a pressure on the' pis= l with the inner surface of the circular cham- In the operati-on of the device, assuming that the rotor is operating in the direction of the'arrow as shown by Figure 3 of the drawings, it is obvious that the piston sho adjacent .to .the inlet pipe, being in contact with the inner surface of the circular chamber, will force the iuid contained in the circular chamber, upwardly. It is obvious. no

ics

that upon continued rotation of the rotor, the fluid Willlbe .forced from the circular chamber through the outlet pipe 10.

lt might be furthe-r stated that the Wall v31 .formed at the base'of the circular chamber, is oset with respect to the upper wall of the circularvchamber to cam the pistons to their inactive positions when they reach the lower portion 'of the circular chamber.' As the uid passes into the inner chamy ber, it will be obvious that quantities of the` liquid will enter the piston pockets through the openings 18 of the pistons, 'trapping ported adjacent to the pockets, said shafts extending beyond the ends of the rotor, spring securing members mounted on the extended ends of the shafts and having hook renacer `securing members to normally move the pistons to their active positions, and said pistons adapted to move Within the pockets of the rotor 2. ln a rotary pump construction, a base, a circular chamber disposed above the base,

a' rotor within the chamber, said rotor having pockets, --pistons disposed Within the pockets, said` istons including shafts extending heyon the ends of the rotor, and spring members secured to the rotor and having connection with the extended ends of the shafts for normally urging the pistons to their active positions.

ln testimony that ll claim the foregoing as my own, I have hereto affixed my signature in the presence of two Witnesses.

. RALPH J. MEYER. Witnesses: Y

G. F. Cox, ANNA RAND. 

